Myoconcha trapezoidalis posteroexpansa Kobayashi & Ichikawa
| 1964. | Myoconcha trapezoidalis posteroexpansa Kobayashi & Ichikawa Holotype Shikama, T. 1964 p. 130, pl. 42, fig. 6 |
| 1952. | Myoconcha trapezoidalis posteroexpansa Kobayashi & Ichikawa Holotype Shikama, T. 1952 p. 184, pl. 54, fig. 12 |
| 1950. | Myoconcha trapezoidalis var. posteroexpansa Kobayashi & Ichikawa Holotype Kobayashi, T. & Ichikawa, K. 1950a p. 214, pl. 1, fig. 11 |
| Condition: | Present |
| Taxonomy: | Mollusca: Bivalvia: Permophoridae: |
| Geologic Time: | Mesozoic: |
| Kobayashi, T. and Ichikawa, K., 1950a: Late Triassic Mytilus, Volsella, Pleurophorus and Myoconcha from the Sakawa basin in Shikoku, Japan. Journal of the Faculty of Science, University of Tokyo, Section 2, vol. 7, pt. 3, pp. 207–215, pl. 1. (Reference No. 0183) |
 |
| Shikama, T., 1952: A handbook of illustrated fossils from Japanese and their adjacent territories., pp. 1–376, pls. 1–57. Nippon Koubutu Syumi-no-kai, Kyoto. (in Japanese) (Reference No. 0617) |
| Shikama, T., 1964a: Index fossils of Japan., pp. 1–287, pls. 1–80. Asakura Shoten, Tokyo. (in Japanese) (Reference No. 0618) |
| Ichikawa, T., 1988, no. 15, p. 163. |
| Ichikawa, T., 1988, no. 15, p. 150. |
| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 183. |
